No one has said they don't want to see GSP-Silva. GSP has basically said repeatedly that he doesn't want to fight Silva, and people have said that they don't really blame him.

And Silva would knock GSP out in one round.

Well I do blame him and I've met him.

I would understand if GSP doesn't want to fight him at 185 but he should at least attempt to fight him at 178 for a p4p title. What does he have to lose?

I think he is over thinking his legacy. He would have a lot more to lose IMO if he doesn't fight him. When he retires, he will have the stigma of never fighting Silva. At least ppl would give him props for the fight. And at the least it would give a huge boost to the sport.